ci: reference ocaml-dune in debian/control

Author: Xyene

debian/control

@@ -2,7 +2,7 @@ Source: magic-trace
 Section: devel
 Priority: optional
 Maintainer: Jane Street <opensource-contacts@janestreet.com>
-Build-Depends: debhelper-compat (= 12), opam, dune
+Build-Depends: debhelper-compat (= 12), opam, ocaml-dune
 Standards-Version: 4.5.1
 Homepage: https://github.com/janestreet/magic-trace
 Vcs-Browser: https://github.com/janestreet/magic-trace